Thanks for your response dear John.

]]>yz plane is perpendicular to x-axis.

]]>Thank you very much dear John for your response. Your reply was: ” x and y are arbitrary. In general for a ULA you cannot estimate the angle in the plane perpendicular to ULA axis.”

What do you mean by this statement? If we place antennas along x-axis, then definitely the axis of that array will be x-axis. Now which plane is perpendicular to this axis? In my opinion, these are xy-plane, xz-plane and yz-planes. So according to your reply, we cannot estimate the angle in these planes? Isn’t that? If it is so, then why do we find in “Literature” that if ULA is along x-axis, we find the elevation angle only. Now you know that elevation angle is the angle of the line joining the target and the axis of the array (in this case x-axis). Based on this logic, this elevation angle is in the xy-plane which is perpendicular to the axis of the array. But you say, we cannot estimate this angle? So I got confused with your this reply. Can you guide me further? Regards,

]]>x and y is aribtrary. In general for a ULA you cannot estimate the angle in the plane perpendicular to ULA axis.

]]>And we like to use microwave ovens in our homes/kitchens.

]]>Can you not shift the origin by the distance, like in a 2D circle.

]]>Sorry for my interruption. I think d_circular is the arc length between two elements. Then the equation satisfies.

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